Idempotent Requests

Idempotent Requests Server provides API to allocate and record a captured request. It follows behaviors described in IETF draft for standardized Idempotency-Key header .

Contract

API contract

MongoDB access pattern

More details on MongoDB access pattern

Idempotent Requests Client

We have implemented a client in a form of a Kong Gateway Plugin - idempotent-requests.

Configuration

Config	Required	Default	Explanation
MONGODB_URI	yes	mongodb://root:password123@localhost:27017	URI to connect to MongoDB
OPENTRACING_ENABLED	no	true	Enable opentracing
OPENTRACING_TRACER_IMPLEMENTATION	no	datadog	Use Datadog tracer implementation

Example topology

This example topology relies on Kong Gateway to intercept client requests. A Kong Plugin acts as a client to Idempotent Requests Server.

Data flow

Sequence

Source

Running Integration Tests Locally

docker-compose -f docker-compose.yml \
  -f docker-compose.server.yml \
  -f docker-compose.integration.yml \
  up --exit-code-from integration-test